Distiller's yeast stirring device

Abstract

The utility model provides a distiller's yeast mixing device, which relates to the technical field of distiller's yeast production devices and comprises a mixing drum, the mixing drum is horizontally and fixedly arranged, a hollow mixing cavity is arranged in the mixing drum, one side of the middle of the mixing cavity and the bottom of the mixing cavity are respectively communicated with a feed port and a discharge port, and a side cover and a bottom cover are respectively and fixedly connected outside the feed port and the discharge port; a pair of rotating rings are longitudinally and rotatably arranged in the stirring cavity, the two rotating rings are fixedly connected through a plurality of stirring plates, the outer sides of the stirring plates are separated from the inner wall of the stirring cavity, a rotating shaft is coaxially and rotatably arranged in the stirring cavity, a plurality of stirring rings are fixedly connected to the side face of the rotating shaft, and a driving source is fixedly arranged on one side of the stirring barrel; according to the distiller's yeast stirring device, distiller's yeast at the bottom and the outer layer of the stirring cavity is scraped and turned up to one side through the stirring plate, stirring dead angles are avoided, the distiller's yeast in the middle is continuously stirred through the stirring ring, and the distiller's yeast is stirred more evenly through linkage cooperation of the stirring plate and the stirring ring.

Description

Technical Field

[0001] This utility model relates to the technical field of yeast production equipment, and in particular to a yeast mixing device. Background Technology

[0002] In the process of brewing baijiu (Chinese liquor), mixing the starter culture (qu) is one of the core technological steps. Its main functions are reflected in three aspects: activating microbial activity, regulating the fermentation environment, and generating flavor compounds. The starter culture contains various functional microorganisms such as molds, yeasts, and bacteria. During mixing, the crushed starter culture is thoroughly mixed with the cooked grains (such as sorghum) to provide a suitable growth substrate for the microorganisms. This uniform contact activates the metabolic activity of the microbial community, initiating the synergistic effect of saccharification and fermentation. Mixing the starter culture also regulates the oxygen distribution and temperature gradient of the fermentation system by controlling the moisture content and material porosity, creating a fermentation process characterized by "slow initial growth, strong middle growth, and slow final decline." Maintaining a balanced state is crucial to prevent localized overheating or the growth of unwanted microorganisms. Furthermore, the enzyme system in the yeast interacts with the grain components, promoting biochemical processes such as esterification and Maillard reactions, generating aroma compounds such as ethyl acetate and ethyl hexanoate, which impart a unique aroma to the liquor. The uniformity of yeast mixing directly affects fermentation efficiency and product consistency. However, current yeast mixing operations mostly involve manual mixing. After spreading the yeast on the ground, operators use shovels or special mixing machines to stir it. This method easily leads to yeast contamination, affecting the quality of the final liquor, and increases labor costs, which is not conducive to industrialized mass production.

[0003] Chinese utility model patent CN217709367U discloses a "Stirring Device for Baijiu Brewing," which includes a barrel and a feeding device. The feeding device is located at the top of the barrel and also includes a fixed rod, a first rotating roller, a second rotating roller, a first stirring blade, and a second stirring blade. The fixed rod is connected to the top wall of the barrel. The first rotating roller and the second rotating roller are rotatably located outside the fixed rod. This utility model uses a rotating mechanism inside the barrel to drive the first and second stirring blades to rotate. The first stirring blade is located outside the second stirring blade and rotates in opposite directions. The two sets of stirring blades work simultaneously, which can more quickly cover the entire stirring area, thereby accelerating the stirring speed and improving the stirring efficiency. The forward and reverse stirring blades stir the koji in different directions, which helps to break the koji's agglomeration and make it more evenly dispersed in the raw materials.

[0004] However, in the above structure, only one set of stirring rods is set in the mixing barrel, and the length and angle of the stirring rods cannot be adjusted. This means that during the mixing process, the yeast that is at the bottom of the mixing barrel and close to the barrel wall cannot be contacted by the stirring rods, making it difficult to be stirred well. Ultimately, this may result in uneven stirring of the yeast, affecting the quality of the final liquor. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this utility model provides a yeast mixing device that solves the problem that yeast located at the bottom of the mixing barrel and close to the barrel wall cannot be contacted by the mixing rod, making it difficult to mix well and ultimately resulting in uneven mixing of the yeast, which affects the quality of the final liquor.

[0006] According to an embodiment of the present invention, a yeast mixing device includes:

[0007] A mixing drum is horizontally fixedly set. The mixing drum is hollow and has a mixing chamber. A feed inlet is connected to one side of the middle of the mixing chamber, and a discharge outlet is connected to the bottom of the mixing chamber. A side cover and a bottom cover are fixedly connected to the feed inlet and the discharge outlet, respectively.

[0008] The first stirring section includes a pair of rotating rings, which are longitudinally rotatably disposed in the stirring chamber. The two rotating rings are fixedly connected in opposite directions by a plurality of stirring plates, and the outer side of the stirring plates is separated from the inner wall of the stirring chamber.

[0009] The second stirring part includes a rotating shaft, which is coaxial with the rotating ring and rotatably disposed in the stirring chamber. Several stirring rings are fixedly connected to the side of the rotating shaft.

[0010] A drive source is fixedly disposed on one side of the stirring drum and is used to drive the first stirring part and the second stirring part to rotate.

[0011] The technical principle of this utility model is as follows: close the discharge port, and put the mixed yeast and grain into the mixing drum through the feed port. Close the feed port, turn on the drive source to drive the first and second mixing parts to stir the yeast. Since the rotating ring is longitudinally rotated in the mixing chamber and the mixing plate is separated from the inner wall of the mixing chamber, the mixing plate can scrape the inner wall of the mixing chamber when it rotates. During the mixing process, the yeast accumulated at the bottom of the mixing chamber will be scraped and turned to one side by the mixing plate, while the yeast in the middle will be continuously turned over by the stirring of the mixing ring. The mixing plate and the mixing ring work together to stir the yeast in the mixing chamber without dead angles. After the stirring is completed, open the discharge port to discharge the yeast.

[0012] Furthermore, the drive source includes a motor, the output shaft of which is fixedly connected to a drive gear, and a gear ring is fixedly connected to the outer side of the rotating ring. A plurality of meshing teeth are arranged around the inner wall of the gear ring, and the meshing teeth can mesh with the drive gear.

[0013] Furthermore, a driven gear is fixedly provided at one end of the rotating shaft, and the driven gear meshes with the driving gear.

[0014] Furthermore, the stirring ring includes several horizontal stirring rings, which are identical in shape but different in size. The horizontal stirring rings are symmetrically fixed on both sides of the rotating shaft and are arranged at equal intervals from the two ends of the rotating shaft toward the center, decreasing in size.

[0015] Furthermore, the stirring ring also includes several longitudinal stirring rings. The longitudinal stirring rings have the same width but different lengths. The longitudinal stirring rings are symmetrically fixed on both sides of the rotating shaft and are arranged at equal intervals from the middle of the rotating shaft to both ends, from long to short. The longitudinal stirring rings are perpendicular to the transverse stirring rings.

[0016] Furthermore, a limiting ring is fixedly connected to the outer side of the two rotating rings, and the outer diameter of the limiting ring is larger than the outer diameter of the rotating ring.

[0017] Furthermore, the stirring chamber is cylindrical and the cylindrical surface is set as an outwardly convex arc surface, and the outer side of the stirring plate has the same curvature as the arc surface.

[0018] Furthermore, the discharge port spans both sides of the bottom of the mixing chamber.

[0019] Furthermore, the side cover and bottom cover are respectively hinged to one side of the inlet and outlet.

[0020] Furthermore, a side plug and a bottom plug are fixedly connected to the inner sides of the side cover and the bottom cover, respectively. The side plug and the bottom plug are made of rubber. An anti-jamming groove is provided on the inner side of the bottom plug. The anti-jamming groove can fit against the inner wall of the stirring chamber when the bottom cover is rotated to close.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. By setting the rotating ring longitudinally inside the mixing chamber, the rotating ring stably drives the mixing plate to rotate. Since the mixing plate is separated from the inner wall of the mixing chamber, the mixing plate can scrape the inner wall of the mixing chamber when it rotates. During the mixing process, the mixing plate can scrape and turn the yeast accumulated at the bottom of the mixing chamber to one side, thereby avoiding the situation where the yeast at the bottom of the mixing barrel and close to the barrel wall cannot be contacted by the mixing rod and there are dead corners in the mixing, so that the yeast is mixed more evenly.

[0023] 2. By setting a stirring ring that rotates coaxially with the rotating ring, the stirring ring continuously stirs the yeast accumulated in the middle. The stirring plate and the stirring ring work together to stir the yeast in the stirring chamber without dead angles, further improving the stirring effect of the yeast. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0025] Figure 2 This is a partial structural cross-sectional schematic diagram of an embodiment of the present utility model.

[0026] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0027] Figure 4 This is a schematic diagram of a partial structural cross-section from another perspective of an embodiment of the present utility model.

[0028] Figure 5 This is a schematic diagram of the structure of the first stirring section in an embodiment of the present invention.

[0029] Figure 6 This is a schematic diagram of the structure of the second stirring section in an embodiment of this utility model.

[0030] In the above attached figures: 1. Mixing drum; 11. Feed inlet; 12. Discharge outlet; 13. Support frame; 14. Mixing chamber; 2. Rotating ring; 21. Limiting ring; 22. Mixing plate; 23. Gear ring; 231. Meshing teeth; 3. Rotating shaft; 31. Mixing ring; 311. Horizontal mixing ring; 312. Vertical mixing ring; 33. Driven gear; 4. Motor; 41. Drive gear; 5. Side cover; 51. Side plug; 52. Handle; 6. Bottom cover; 61. Bottom plug; 611. Anti-jamming groove. Detailed Implementation

[0031] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0032] like Figure 1 and Figure 2 As shown in the figure, this utility model embodiment proposes a yeast mixing device, which includes a mixing cylinder 1. A support frame 13 is fixedly installed at the bottom of the mixing cylinder 1 to support the mixing cylinder 1 horizontally. A mixing chamber 14 is hollow inside the mixing cylinder 1. The mixing chamber 14 is preferably cylindrical and horizontally arranged. An inlet 11 is provided on one side of the middle part of the mixing chamber 14, and the inlet 11 connects the inside and outside of the mixing chamber 14. An outlet 12 is provided at the bottom of the mixing chamber 14, and the outlet 12 connects the inside and outside of the mixing chamber 14. A side cover 5 and a bottom cover 6 are fixedly connected to the outside of the inlet 11 and the outlet 12, respectively. In this embodiment, the side cover 5 and the bottom cover 6 are hinged to one side of the inlet 11 and the outlet 12, respectively, so that the side cover 5 and the bottom cover 6 can rotate to close or separate the inlet 11 and the outlet 12. A handle 52 is fixedly connected to the outside of the side cover 5 and the bottom cover 6.

[0033] like Figures 2-5As shown, in this embodiment, a first stirring part is rotatably arranged inside the stirring chamber 14. The first stirring part includes a pair of rotating rings 2. The two rotating rings 2 are longitudinally rotatably arranged inside the stirring chamber 14. The rotating rings 2 are coaxially arranged with the stirring chamber 14. The two rotating rings 2 are fixedly connected to each other by a plurality of stirring plates 22. The width of the stirring plates 22 is smaller than the width of the rotating rings 2. The stirring plates 22 are fixedly connected to the outer side of the rotating rings 2, and the outer shape of the stirring plates 22 is close to the inner wall of the stirring chamber 14 so that the stirring plates 22 can be separated from the inner wall of the stirring chamber 14. A limiting ring 21 is fixedly connected to the outer side of the two rotating rings 2. The outer diameter of the limiting ring 21 is larger than the outer diameter of the rotating ring 2. The cross section of the limiting ring 21 and the rotating ring 2 is stepped, so that the rotating ring 2 can be stably engaged and rotated inside the stirring chamber 14.

[0034] like Figure 2-4 and Figure 6 As shown, in this embodiment, a second stirring part is rotatably arranged inside the stirring chamber 14. The second stirring part includes a rotating shaft 3, which is coaxial with the rotating ring 2 and rotatably arranged inside the stirring chamber 14. A plurality of stirring rings 31 are fixedly connected to the side of the rotating shaft 3. Preferably, the stirring rings 31 include a plurality of transverse stirring rings 311. The plurality of transverse stirring rings 311 are identical in shape but different in size. The rings are preferably the same as the cross-section of the stirring chamber 14. On the rotating shaft 3, the plurality of transverse stirring rings 311 are symmetrically fixed on both sides of the rotating shaft 3 and are arranged at equal intervals from the two ends of the rotating shaft 3 towards the center, from large to small, so that the transverse stirring rings 311 can provide a more uniform stirring force to the yeast during stirring. Furthermore, the stirring rings 31 also include a plurality of longitudinal stirring rings 312. The multiple longitudinal stirring rings 312 have the same width but different lengths. The longitudinal stirring rings 312 are preferably flat and elongated. The multiple longitudinal stirring rings 312 are symmetrically fixed on both sides of the rotating shaft 3 and are arranged at equal intervals from the middle of the rotating shaft 3 to both ends, from long to short. The longitudinal stirring rings 312 are perpendicular to the transverse stirring rings 311. The outer edge of the largest transverse stirring ring 311 is consistent in shape and size with the arc-shaped tangent surface formed by the side of the longitudinal stirring rings 312 away from the rotating shaft 3. This allows the transverse stirring rings 311 and the longitudinal stirring rings 312 to form a stable and consistent annular stirring surface during rotation. Furthermore, the fixed connection point of the transverse stirring ring 311 can be set between the gaps of the longitudinal stirring rings 312, so that the yeast can be stirred to a greater extent through the crisscross structure, greatly improving the stirring effect.

[0035] like Figure 2-4As shown, a drive source is also fixedly installed on one side of the stirring drum 1. The drive source is used to drive the first stirring part and the second stirring part to rotate. In this embodiment, the drive source includes a motor 4. The output shaft of the motor 4 is fixedly connected to a drive gear 41. A gear ring 23 is fixedly connected to the outside of the rotating ring 2. A plurality of meshing teeth 231 are arranged around the inner wall of the gear ring 23. The meshing teeth 231 can mesh with the drive gear 41. At the same time, a driven gear 33 is fixedly installed at one end of the rotating shaft 3. The driven gear 33 also meshes with the drive gear 41. The driven gear 33 and the drive gear 41 are both located inside the drum wall of the stirring drum 1 and do not contact the material. When the motor 4 rotates, the rotating ring 2 and the rotating shaft 3 respectively drive the stirring plate 22 and the stirring ring 31 to rotate in opposite directions.

[0036] The technical principle of this utility model is as follows: close the discharge port 12, and put the mixed yeast and grain into the mixing drum 1 through the feed port 11. Close the feed port 11, and turn on the motor 4 to drive the rotating ring 2 and the rotating shaft 3 to rotate. The rotating ring 2 and the rotating shaft 3 respectively drive the stirring plate 22 and the stirring ring 31 to rotate in opposite directions to stir the yeast. Since the rotating ring 2 is set in the stirring chamber 14 in a longitudinal direction, and the stirring plate 22 is separated from the inner wall of the stirring chamber 14, the stirring plate 22 can scrape the inner wall of the stirring chamber 14 when it rotates. During the mixing process, the yeast accumulated at the bottom of the stirring chamber 14 will be scraped and turned to one side by the stirring plate 22, while the yeast in the middle will be continuously divided and turned over under the stirring of the cross structure of the horizontal stirring ring 311 and the vertical stirring ring 312, so that the yeast in the stirring chamber 14 is stirred without dead angles. After the stirring is completed, open the discharge port 12 to discharge the yeast.

[0037] This invention features a rotating ring 2 longitudinally mounted within a stirring chamber 14. The rotating ring 2 stably drives the stirring plate 22 to rotate. Because the stirring plate 22 is separated from the inner wall of the stirring chamber 14, the stirring plate 22 can scrape the inner wall of the stirring chamber 14 during rotation. During the mixing process, the stirring plate 22 can scrape and flip the yeast accumulated at the bottom of the stirring chamber 14 to one side, causing the outer layer of yeast near the barrel wall to move continuously. This avoids the situation where the yeast at the bottom of the mixing barrel and close to the barrel wall cannot be contacted by the stirring rod, resulting in a dead zone in the mixing, thus making the yeast more evenly mixed. Furthermore, by rotating the stirring ring 31 coaxially with the rotating ring 2, the stirring ring 31 can continuously stir the yeast concentrated in the middle. The horizontal stirring ring 311 and the vertical stirring ring 312 form a crisscrossing stirring structure. This structure can continuously divide, flip, and stir the yeast, resulting in fine stirring and greatly improving the stirring effect.

[0038] like Figures 1-2 and Figures 4-5As shown, according to another embodiment of the present invention, the mixing device for yeast has a cylindrical mixing chamber 14 with a convex arc surface on the cylindrical surface. The outer side of the mixing plate 22 has the same curvature as the arc surface. Furthermore, the discharge port 12 spans both sides of the bottom cylindrical surface of the mixing chamber 14 and is rectangular. Side plugs 51 and bottom plugs 61 are fixedly connected to the inner sides of the side cover 5 and the bottom cover 6, respectively. The side plugs 51 and bottom plugs 61 are made of materials including but not limited to rubber, silicone rubber, or thermoplastic elastomers, which have elasticity. In this embodiment, the side plug 51 and bottom plug 61 are made of rubber. The shapes of the side plug 51 and bottom plug 61 are consistent with the feed inlet 11 and the discharge outlet 12. An arc-shaped anti-jamming groove 611 is provided on the inner side of the bottom plug 61. The arc surface of the anti-jamming groove 611 is consistent with the arc surface of the mixing chamber 14 at the discharge outlet 12, so that when the bottom cover 6 is rotated to close, the bottom plug 61 can be embedded in the discharge outlet 12 and the anti-jamming groove 611 can fit against the inner wall of the mixing chamber 14.

[0039] Based on the above improvements, since the discharge port 12 spans both sides of the bottom cylindrical surface of the mixing chamber 14, the grains and yeast can quickly converge and discharge to the discharge port 12 during discharge, increasing the discharge rate and preventing residue from being generated at the bottom of the mixing chamber 14. The side plug 51 and the bottom plug 61 can seal the mixing chamber 14. The bottom plug 61 is embedded in the discharge port 12, and the anti-jamming groove 611 fits against the inner wall of the mixing chamber 14, so that the bottom of the mixing chamber 14 is combined into a complete mixing surface. This avoids the situation where there is a gap due to the discharge port 12, causing some material to fall onto the bottom cover 6 in the gap and not be effectively mixed, further increasing the practicality of the device.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A koji mixing device for koji, characterized by comprising: Include: The stirring drum (1) is fixed horizontally, the stirring drum (1) is hollow in the stirring cavity (14), the stirring cavity (14) is communicated with the feeding port (11) on one side of the middle part, the stirring cavity (14) is communicated with the discharge port (12) at the bottom, the feeding port (11) and the discharge port (12) are respectively fixedly connected with the side cover (5) and the bottom cover (6) outside; The first stirring part includes a pair of rotating rings (2), the two rotating rings (2) are longitudinally arranged in the stirring cavity (14), and the two rotating rings (2) are fixedly connected by a plurality of stirring plates (22) opposite to each other, the outer side of the stirring plate (22) is away from the inner wall of the stirring cavity (14); The second stirring part includes a rotating shaft (3), the rotating shaft (3) is coaxial with the rotating ring (2) and is arranged in the stirring cavity (14), and the rotating shaft (3) is fixedly connected with a plurality of stirring rings (31) on the side surface; The driving source is fixedly arranged on one side of the stirring drum (1), which is used for driving the first stirring part and the second stirring part to rotate.

2. The koji mixing apparatus according to claim 1, wherein: The driving source includes a motor (4), the output shaft of the motor (4) is fixedly connected with a driving gear (41), one side of the rotating ring (2) is fixedly connected with a gear ring (23), a plurality of meshing teeth (231) are arranged on the inner wall of the gear ring (23), and the meshing teeth (231) can be meshed with the driving gear (41).

3. The koji mixing apparatus according to claim 2, wherein: One end of the rotating shaft (3) is fixedly provided with a driven gear (33), and the driven gear (33) is meshed with the driving gear (41).

4. The koji mixing apparatus according to claim 1, wherein: The stirring ring (31) includes a plurality of horizontal stirring rings (311), a plurality of the horizontal stirring rings (311) are the same in shape but different in size, and a plurality of the horizontal stirring rings (311) are fixedly arranged on both sides of the rotating shaft (3) and are arranged equidistantly from the ring center from both ends to the middle part.

5. The koji mixing apparatus according to claim 4, wherein: The stirring ring (31) also includes a plurality of longitudinal stirring rings (312), a plurality of the longitudinal stirring rings (312) are the same in width but different in length, a plurality of the longitudinal stirring rings (312) are fixedly arranged on both sides of the rotating shaft (3) and are arranged equidistantly from long to short from the middle part to both ends of the rotating shaft (3), and the longitudinal stirring ring (312) is perpendicular to the horizontal stirring ring (311).

6. The koji mixing apparatus of claim 1, wherein: The outer side of the two rotating rings (2) is fixedly connected with a limiting ring (21), and the outer diameter of the limiting ring (21) is greater than the outer diameter of the rotating ring (2).

7. The koji mixing apparatus of claim 1, wherein: The stirring cavity (14) is cylindrical, and the cylindrical surface is provided as an arc surface outwardly convex, and the outer side of the stirring plate (22) is consistent with the curvature of the arc surface.

8. The koji mixing apparatus of claim 1, wherein: The discharge port (12) spans the bottom of the stirring cavity (14) on both sides.

9. The koji mixing apparatus of claim 8, wherein: The side cover (5) and the bottom cover (6) are respectively hinged with one side of the feeding port (11) and the discharge port (12).

10. The koji mixing apparatus of claim 9, wherein: The side cover (5) and the bottom cover (6) are respectively fixedly connected with a side plug (51) and a bottom plug (61), the material of the side plug (51) and the bottom plug (61) comprises rubber, the inner side of the bottom plug (61) is provided with an anti-blocking groove (611), and the anti-blocking groove (611) can be attached to the inner wall of the stirring cavity (14) when the bottom cover (6) is rotated to be closed.

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